Analysis of Neutral B-Meson Decays into Two Muons - INSPIRE

DataBETA

Analysis of Neutral B-Meson Decays into Two Muons

LHCb

Collaboration

Aug 20, 2021

20 pages

Published in:

Phys.Rev.Lett. 128 (2022) 4, 041801

Published: Jan 25, 2022

e-Print:

2108.09284 [hep-ex]

DOI:

10.1103/PhysRevLett.128.041801 (publication)

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit \mu}^{+}}{{\mathit \mu}^{-}}

Report number:

CERN-CERN-EP-2021-132,
LHCb-PAPER-2021-007

Experiments:

CERN-LHC-LHCb

View in:

reference search198 citations

Citations per year

Abstract: (APS)

Branching fraction and effective lifetime measurements of the rare decay

B_{s}^{0} \to μ^{+} μ^{-}

and searches for the decays

B^{0} \to μ^{+} μ^{-}

and

B_{s}^{0} \to μ^{+} μ^{-} γ

are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a luminosity of

9 {fb}^{- 1}

. The branching fraction

B (B_{s}^{0} \to μ^{+} μ^{-}) = (3.0 9_{- 0.43 - 0.11}^{+ 0.46 + 0.15}) \times 10^{- 9}

and the effective lifetime

τ (B_{s}^{0} \to μ^{+} μ^{-}) = 2.07 \pm 0.29 \pm 0.03 ps

are measured, where the first uncertainty is statistical and the second systematic. No significant signal for

B^{0} \to μ^{+} μ^{-}

and

B_{s}^{0} \to μ^{+} μ^{-} γ

decays is found and upper limits

B (B^{0} \to μ^{+} μ^{-}) < 2.6 \times 10^{- 10}

and

B (B_{s}^{0} \to μ^{+} μ^{-} γ) < 2.0 \times 10^{- 9}

at the 95% C.L. are determined, where the latter is limited to the range

m_{μ μ} > 4.9 GeV / c^{2}

. The results are in agreement with the standard model expectations.

Note:

All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-007.html (LHCb public pages)

p p: colliding beams
p p: scattering
B/s0: lifetime
B/s0: rare decay
B0: rare decay
B/s0: leptonic decay
B0: leptonic decay
B/s0: radiative decay
muon: pair production
LHC-B

References(61)

Figures(8)

[1]

$B_{s,d} \to l^+ l^-$ in the Standard Model with Reduced Theoretical Uncertainty

Christoph Bobeth
(
- Munich, Tech. U.
)
,
Martin Gorbahn
(
- Liverpool U., Dept. Math. and
- Munich, Tech. U.
)
,
Thomas Hermann
(
- KIT, Karlsruhe, TTP
)
,
Mikolaj Misiak
(
- Warsaw U. and
- CERN
)
,
Emmanuel Stamou
(
- Munich, Tech. U. and
- Weizmann Inst.
)

et al.

- Phys.Rev.Lett. 112 (2014) 101801
•
e-Print:
- 1311.0903
•
DOI:
- 10.1103/PhysRevLett.112.101801

[2]

Power-enhanced leading-logarithmic QED corrections to $B_q \to \mu^+\mu^-$

Martin Beneke
(
- Munich, Tech. U.
)
,
Christoph Bobeth
(
- Munich, Tech. U.
)
,
Robert Szafron
(
- Munich, Tech. U.
)

- JHEP10(2019)232,
- JHEP 10 (2019) 232,
- JHEP 11 (2022) 099 (erratum)
•
e-Print:
- 1908.07011
•
DOI:
- 10.1007/JHEP10(2019)232

[3]

FLAG Review 2019: Flavour Lattice Averaging Group (FLAG)

S. Aoki
(
- Kyoto U., Yukawa Inst., Kyoto
)
,
Y. Aoki
(
- KEK, Tsukuba and
- RIKEN BNL
)
,
D. Bečirević
(
- Orsay, LPT
)
,
T. Blum
(
- Connecticut U. and
- RIKEN BNL
)
,
G. Colangelo
(
- U. Bern, AEC
)

et al.

- Eur.Phys.J.C 80 (2020) 2, 113
•
e-Print:
- 1902.08191
•
DOI:
- 10.1140/epjc/s10052-019-7354-7

[4]

$B$ - and $D$ -meson leptonic decay constants from four-flavor lattice QCD

A. Bazavov
(
- Michigan State U.
)
,
C. Bernard
(
- Washington U., St. Louis
)
,
N. Brown
(
- Washington U., St. Louis
)
,
C. Detar
(
- Utah U.
)
,
A.X. El-Khadra
(
- Illinois U., Urbana and
- Fermilab
)

et al.

- Phys.Rev.D 98 (2018) 7, 074512
•
e-Print:
- 1712.09262
•
DOI:
- 10.1103/PhysRevD.98.074512

[5]

Mass of the b quark and B -meson decay constants from N $_f$ =2+1+1 twisted-mass lattice QCD

ETM

Collaboration

•

A. Bussone
(
- Southern Denmark U., CP3-Origins and
- U. Southern Denmark, Odense, DIAS
)

et al.

- Phys.Rev.D 93 (2016) 11, 114505
•
e-Print:
- 1603.04306
•
DOI:
- 10.1103/PhysRevD.93.114505

[6]

B-Meson Decay Constants from Improved Lattice Nonrelativistic QCD with Physical u, d, s, and c Quarks

HPQCD

Collaboration

•

R.J. Dowdall
(
- Cambridge U., DAMTP and
- Glasgow U.
)

et al.

- Phys.Rev.Lett. 110 (2013) 22, 222003
•
e-Print:
- 1302.2644
•
DOI:
- 10.1103/PhysRevLett.110.222003

[7]

New methods for B meson decay constants and form factors from lattice NRQCD

C. Hughes
(
- Cambridge U., DAMTP and
- Fermilab
)
,
C.T.H. Davies
(
- Glasgow U. and
- SUPA, UK
)
,
C.J. Monahan
(
- Rutgers U., Piscataway and
- Washington U., Seattle
)

- Phys.Rev.D 97 (2018) 5, 054509
•
e-Print:
- 1711.09981
•
DOI:
- 10.1103/PhysRevD.97.054509

[8]

$B_s\to\mu^+\mu^-$ as current and future probe of new physics

- JHEP 05 (2017) 076
•
e-Print:
- 1702.05498
•
DOI:
- 10.1007/JHEP05(2017)076

[9]

Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data

CMS and
LHCb

Collaborations

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- Nature 522 (2015) 68-72
•
e-Print:
- 1411.4413
•
DOI:
- 10.1038/nature14474

[10]

Measurement of the $B^0_s\to\mu^+\mu^-$ branching fraction and effective lifetime and search for $B^0\to\mu^+\mu^-$ decays

LHCb

Collaboration

•

Roel Aaij
(
- CERN
)

et al.

- Phys.Rev.Lett. 118 (2017) 19, 191801
•
e-Print:
- 1703.05747
•
DOI:
- 10.1103/PhysRevLett.118.191801

[11]

Study of the rare decays of $B^0_s$ and $B^0$ mesons into muon pairs using data collected during 2015 and 2016 with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 04 (2019) 098
•
e-Print:
- 1812.03017
•
DOI:
- 10.1007/JHEP04(2019)098

[12]

Measurement of properties of B $^0_\mathrm{s}\to\mu^+\mu^-$ decays and search for B $^0\to\mu^+\mu^-$ with the CMS experiment

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 04 (2020) 188
•
e-Print:
- 1910.12127
•
DOI:
- 10.1007/JHEP04(2020)188

[13]

Combination of the ATLAS, CMS and LHCb results on the

Atlas
,
Cms

[14]

Rare radiative leptonic decays B(d,s) ---> l+l- gamma

Dmitri Melikhov
(
- SINP, Moscow
)
,
Nikolai Nikitin
(
- SINP, Moscow
)

- Phys.Rev.D 70 (2004) 114028
•
e-Print:
- hep-ph/0410146
•
DOI:
- 10.1103/PhysRevD.70.114028

[15]

Rare FCNC radiative leptonic $B_{s,d}\to \gamma l^+l^-$ decays in the standard model

Anastasiia Kozachuk
(
- Moscow State U. and
- SINP, Moscow
)
,
Dmitri Melikhov
(
- SINP, Moscow and
- Vienna U. and
- Vienna, OAW
)
,
Nikolai Nikitin
(
- Moscow State U. and
- SINP, Moscow and
- Vienna, OAW
)

- Phys.Rev.D 97 (2018) 5, 053007
•
e-Print:
- 1712.07926
•
DOI:
- 10.1103/PhysRevD.97.053007

[16]

$B^{0}_{s} \to \mu^{+}\mu^{-}\gamma$ from $B^{0}_{s} \to \mu^{+}\mu^{-}$

Francesco Dettori
(
- CERN
)
,
Diego Guadagnoli
(
- Annecy, LAPTH
)
,
Meril Reboud
(
- Annecy, LAPTH and
- Lyon, Ecole Normale Superieure
)

- Phys.Lett.B 768 (2017) 163-167
•
e-Print:
- 1610.00629
•
DOI:
- 10.1016/j.physletb.2017.02.048

[17]

Radiative dileptonic decays of B mesons

- Phys.Lett.B 391 (1997) 461-464
•
e-Print:
- hep-ph/9606444
•
DOI:
- 10.1016/S0370-2693(96)01491-8

[18]

B(q) ---> lepton+ lepton- gamma decays in light cone QCD

- Phys.Rev.D 55 (1997) 7059-7066
•
e-Print:
- hep-ph/9611393
•
DOI:
- 10.1103/PhysRevD.55.7059

[19]

Study of B(s,d) ---> l+ l- gamma decays

- Phys.Rev.D 62 (2000) 074017
•
e-Print:
- hep-ph/0007252
•
DOI:
- 10.1103/PhysRevD.62.074017

[20]

Study of $B_s\to\ell^+\ell^-\gamma$ decays in covariant quark model

S. Dubnička
(
- Bratislava, Inst. Phys.
)
,
A.Z. Dubničková
(
- Comenius U.
)
,
M.A. Ivanov
(
- Dubna, JINR
)
,
A. Liptaj
(
- Bratislava, Inst. Phys.
)
,
P. Santorelli
(
- Naples U. and
- INFN, Naples
)

et al.

- Phys.Rev.D 99 (2019) 1, 014042
•
e-Print:
- 1808.06261
•
DOI:
- 10.1103/PhysRevD.99.014042

[21]

$B_{d,s}\to\gamma\ell\bar{\ell}$ decay with an energetic photon

Martin Beneke
(
- Munich, Tech. U.
)
,
Christoph Bobeth
(
- Munich, Tech. U.
)
,
Yu-Ming Wang
(
- Nankai U.
)

- JHEP 12 (2020) 148
•
e-Print:
- 2008.12494
•
DOI:
- 10.1007/JHEP12(2020)148

[22]

B $_{s}^{0}$ $\to \ell^{+}$ $\ell^{−} \gamma$ as a test of lepton flavor universality

Diego Guadagnoli
(
- Annecy, LAPTH
)
,
Meril Reboud
(
- Annecy, LAPTH and
- Lyon, Ecole Normale Superieure
)
,
Roman Zwicky
(
- Zurich U. and
- Edinburgh U.
)

- JHEP 11 (2017) 184,
- JHEP11(2017)184
•
e-Print:
- 1708.02649
•
DOI:
- 10.1007/JHEP11(2017)184

[23]

Averages of b-hadron, c-hadron, and $\tau$ -lepton properties as of 2018

HFLAV

Collaboration

•

Yasmine Sara Amhis
(
- Orsay, LAL
)

et al.

- Eur.Phys.J.C 81 (2021) 3, 226
•
e-Print:
- 1909.12524
•
DOI:
- 10.1140/epjc/s10052-020-8156-7

[24]

Branching Ratio Measurements of $B_s$ Decays

Kristof De Bruyn
(
- NIKHEF, Amsterdam
)
,
Robert Fleischer
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)
,
Robert Knegjens
(
- NIKHEF, Amsterdam
)
,
Patrick Koppenburg
(
- NIKHEF, Amsterdam
)
,
Marcel Merk
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

et al.

- Phys.Rev.D 86 (2012) 014027
•
e-Print:
- 1204.1735
•
DOI:
- 10.1103/PhysRevD.86.014027

[25]

Probing New Physics via the $B^0_s\to \mu^+\mu^-$ Effective Lifetime

Kristof De Bruyn
(
- NIKHEF, Amsterdam
)
,
Robert Fleischer
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)
,
Robert Knegjens
(
- NIKHEF, Amsterdam
)
,
Patrick Koppenburg
(
- NIKHEF, Amsterdam
)
,
Marcel Merk
(
- NIKHEF, Amsterdam and
- Vrije U., Amsterdam
)

et al.

- Phys.Rev.Lett. 109 (2012) 041801
•
e-Print:
- 1204.1737
•
DOI:
- 10.1103/PhysRevLett.109.041801

1-25 of 61
1
2
3
25 / page